Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.164..263a&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 164, no. 2, Feb. 1990, p. 263-276.
Astronomy and Astrophysics
Astrophysics
Chromosphere, Emission Spectra, Giant Stars, K Stars, M Stars, Near Ultraviolet Radiation, Astronomical Spectroscopy, Iue, Stellar Spectra, Ultraviolet Spectra
Scientific paper
The near-ultraviolet high-resolution LWR spectra of the stars Alpha Cas, Beta And, Beta Tau, Beta Gem, Delta Cru, Alpha Boo, and Beta Peg, obtained with the aid of the IUE are investigated. A list of the strongest and most prevalent emission lines in the near-ultraviolet spectra of Alpha Boo, K1IIIp, and Beta Peg, M2.5II-III which have the same luminosity class and different spectral type. The near-ultraviolet continuum flux measurements and integrated emission line fluxes of these stars for the 2500-3200 A region are presented in order to compare the variations in the appearance of the near-ultraviolet flux distribution with the temperature structure of their chromospheres for K and M giant stars. Differences between observed and calculated fluxes from the Planck function are discussed.
Avcioglu Kamuran
Mentese Huseyin H.
Ozkan Turker M.
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